mk3 astra ecu fault codes

Discussion in 'Astra' started by Guy Smith, Jul 16, 2003.

  1. Guy Smith

    Guy Smith Guest

    Hi, does anybody know how to read the ECU fault codes on a mk3 astra 1.6 16v
    without having a code reader?
    Any help would be much appreciated.
    Guy Smith, Jul 16, 2003
  2. Guy Smith

    Mike Guest

    Most Vauxhalls still have a 'flash code' daignostic system incorporated -
    even on very late vehicles although , it's capabilities are very limited. On
    the late vehicles a 16-pin OBD type diagnostic connector is used. On most
    cars , joining pins 6 & 5 together will the flash code sequence. On all late
    cars , this ONLY works with the ignition on and the engine not running. The
    limitation of this is that only 'stored' codes are accessible , so it is not
    always possible to tie a stored fault code with a specific problem. The
    other problem is that a non-running engine will always show a 'crankshaft
    signal' or 'engine RPM' type fault simply because the engine isn't turning!.
    This means that if these are the faults causing a vehicle problem , it is
    not possible to identify them using 'flash codes'. The benefits of this
    method over a proper scan tool is therefore limited.
    Mike, Jul 16, 2003
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.